to summarize though, the word is 1LE is strong & aluminum. LS1's do twist on rare occasions. If you're not pushin' some serious HP, I don't think you have to worry. If you are, well, time to save up for a custom steel shaft

The 1LE aluminum driveshafts like most GM products aren't constructed very well. Get an inland empire. 100% better constructed and race proven. THere's plenty of cars making over 500hp with
alumium shafts on them. It's all about the build quality.